Slide-gate.



R. C. FORGE & S. BURNE.

SLIDE GATE.

APPLIGATION FILED NOV. 2.7, 1912.

Patented Nov. 11, 1913.

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R. C. FORGE & S. BURNE.

SLIDE GATE. APLIGATION FILED Nov. 27, 1912.

vPatented Nov. 11, 1913.

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RAYMOND CHARLES FORCE AN'D STANLEY BERNE, or Los ANGELES, CALIEENIA,

AssIGNoEs To CAEIEENIA COVBRUQGATE'D CULVERT COMPANY, or OAKLAND, cALi-EOEN'IA, A CORPORATION 0F CALIFORNIA.

SLIDE-GATE Specification efILetters Patent.l

Application lled'Nyove-mbe 27, 1912. Serial No.` 733;8111.

To all whom, t may concern: 'i

Be it known that we, .RAYMOND GHAREES FoRoE and STANLEY BUENE, citizensof the United States, residing ,at Los Angeles, in

the county of Los Angeles and State of Galifornia, have inventedcertainnew and useful Improvements in Slide-Gates, of 'which they following isa specification. y Our invention relates to the used in irrigationsystems, 'particirlarly pipes of the circumlferentifally corrugatedtype.

The object of our invention is to' provide a ence to the accompanyingdrawingsl 'in whichv Figure 1 is a longitudinalsection of a pipe showingthe gate-slide applied thereto, and

partly raised. Fig.4 2 is a cross 4section of the pipe showing thegate-slide in elevation, partly raised. Fig. 3 is a vlongitudinalsection of a pipe, showing a modification in the location of theslide-seat, they slide itself being omitted. Fig. 4 is a 'similarsection` showing a modification in the shape of the slide-seat.

The slide 1 which forms the gate member may enter and seat itself withinthepipe 2, which is here shown as of the circumferentially corrugatedtype, by any suitable movement relatively to the pipe, as, for example,by being hinged to said pipe and swinging down into place, or, as hereinappears, by a straight movement perpendicular to the pipe, and said'plate is provided with a lifting 'device of suitable nature, hereindicated as a handle 3. The pipe 2 is provided with a cross-slot 4 withan opening j ust sufficient to receive the slide 1. This slot extendsfrom the point 5 to the point 6, as indicated by the dotted lines inFig. 2, or, in other words, the length of the slot is equal to half thecircumference of the pipe 2.

In shape the pipe may have any convenient form in cross section, such assquare, oval or polygonal, andthe slide 1 is shaped to flt the lowerhalf of the pipe; that is, if the pipe is circular, as here shown, thelower part of the slide is made a semi-circle, as

class of slide? gates, and is adapted for' use in connection with anyfluid pipe and especially with pipes.

- shown in Fig. 2. The seat for the slide 1 within the pipe is anencircling groove formed bythe inner face of ain- 'external cir-;.cumf'er'ential offset formed in the pipe, and

:the slot 4 is made through this' offset. This offset is a speciallyprepared one and is ingdependent of any ofthe normal corruga- .tions,valleys or`4 ridges of said pipe, that is, iti is noty oneof said normalcorrugations.

This offset may be located. at various points Aor cross-sections of thepipe, and may be of various sizes and shapes. To illustrate thesefeatures, we show the offset 7 in Figs. 1 and 2, asbeing made in one ofthe crossssectional .areas of the pipe of lesser diameter, so that theslide-seat groove of said offset lies in one kof the interior ridges ofthe pipe. In Fig. 3 we show the fofset Y81, made in one of the cross-.sectional areas of the pipe of Vgreater diameter, so that-fthe`sli-deseat groove of said offset lies in one; ofthe interior valleys ofthe pipe. l

In Figs. 1,12 `and 3, the offsets 7 and 8 are relativelysmall andshallow, while in Fig. 4

.we show an offset 9 which is relatively large and deep. In all casesthe slide 1y seats itself snugly within the groove of the oset and formsa joint which is tight enough for general purposes. There is howeveraspecial advantage in vthat location of the offset which is shown inFigs. 1 and 2, and this construction ispreferred. In this case, the seatfor the slide 1 ylies in an interior ridge of the pipe. In places wherethe water contains more or less sand or gravel, it is evident that theinterior valleys of the pipe tend to fill up and to cover the slide-seatwhen said seat is formed in an interior valley, and thus prevent theproper seating of the slide, but when said seat is formed in an interiorridge, said ridge is at all times exposed to the full force of thecurrent of water and will thus be kelpt clean so that the slide willseat proper y.

In order to better insure the close contact of the surfaces of thecross-slot 4 with slide 1 when the latter is closed, and thereby to forma better joint, the slide is provided with flanges 10. These flanges maybe independent pieces secured to the slide or they may, as here shown,be integral with the slide which is slit and bent to form them. They areapplicable as well to a hinged swinging slide as to the slide hereshown. Their function is to grip by a Wedging ac- Y tion the upturnededges of the offset in which the slot 4 is formed when the slide isclosed, and press said edges against the Y slide. It is best to make oneof these flanges Yso project from one side of the slide andanother fromthe other side of the slide, so that it is immaterial in which directionthe ilovv through the pipe may be; asthere Will then be a grip Iiange onthe side upon Whicli the flow pressure is imposed, Which flange willthus act to close the slot on that side.

We claim l. In a slide-gate for pipes, the combination of acircumferentially corrugated pipe having in the plane of one of'itsinternal ridges a circumferentialA groove exposed to theint'ericr of thepipe, said pipe being formed With a cross slot'in an arc of thecircumference of said groove; and a vslide adapted to fit and move insaid slot to 'traverse the cross sectional areaof the pipes inner faceexposed to the interior'of the pipe, said oset being made in the crosssection of the pipe of lesser diameter Whereby Vits grooved inner facelies in the plane of anV interior ridge of one of the normal`corrugations of the pipe, and said pipe having ka cross slot madethrough its offset in an arc of its circumference, and a slide adaptedto fit and move in said slot to traverse the cross-sectional area of thepipes interior and to seat itself in the interior groove of the offset.

3. In a slide-gate for pipes, the combination of a pipe having acircumferential exterior offset formed with a groove on its inner faceexposed to the interior of the pipe, said pipe having a cross slot madethrough its offset in an arc of its circumference, and a slide adaptedto lit and move in said slot to traverse the cross-sectional area of thepipesinterior and to seat itself in the interior groove of the olset,said slide having a flangerprojecting from its side adapted to grip theupturned edge of the offset to press the slot Wall against the slidewhen the latter is closed.

4. In a slidegage for pipes, the combination of a pipe having acircumferential eX- terior offset formed with a groove on its inner faceexposed to the interior of the pipe, said 'pipe having a cross slot madethrough its offset in an arc of its circumference, and a slide adaptedto lit and move insaid slot to traverse the cross-sectional area of thepipes interior and to seat itself in the interior groove of the offset,said slide having a pair of flanges projecting one from one side and theother from the other side adapted to grip the upturned edgesvof theoffset to press the slot Walls against the slide when the latter isclosed.

ln testimony whereof We have signed our names to this specification inthe presence of two subscribing Witnesses.

RAYMOND CHARLES FORGE. STANLEY BURNE.

Witnesses:

EDWARD C. CAMPBELL, BERNARD Gr. MARSHALL.

Copies of vthis patent may be obtained for ve cents each, by addressingthe Commissioner of Patents, Washington, D. C.

